import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class HelloWorld {
    public static void main(String[] args) throws IOException {
        FileOutputStream fog = new FileOutputStream("fos.txt");
        fog.write(97);
        fog.write(90);
        System.out.println("写出完毕");
        fog.close();
    }
}
